// 获取指定Layer当前最大的sortingOrder
public int GetMaxSortOrder(SortOrderLayer layerType, string name)
{
int maxOrder = (int)layerType;
// Debug.Log("----> Start order: " + maxOrder);
foreach (var uiPair in _uiDic)
{
if (maxOrder <= uiPair.Value.SortOrder && name != uiPair.Key)
{
// Debug.LogFormat("----> Compare Order: {0}/{1} ", maxOrder, uiPair.Value.SortOrder);
// 每新加一个界面，sortingOrder会根据当前层级增加
maxOrder = uiPair.Value.SortOrder + (int)layerType;
}
}
// Debug.Log("----> Result order: " + maxOrder);
return(maxOrder);
}
/// <summary>
/// 打开一个界面
/// </summary>
public T Show <T>(OpenType openType = OpenType.Add, SortOrderLayer layer = SortOrderLayer.HomePanel) where T : UIBase
{
string uiName = typeof(T).ToString();
UIBase uiBase;
if (_uiDic.ContainsKey(uiName))
{
// 界面已经存在，从字典中取出，Active设置为true
// 且会重新计算层级，且会刷新界面
uiBase = _uiDic[uiName];
uiBase.gameObject.SetActive(true);
uiBase.Refresh();
}
else
{
// 新开界面
GameObject uiGO = SimpleLoader.InstantiateGameObject(_uiRootPath + uiName + ".prefab");
uiGO.transform.SetParent(_canvasGameObject.transform, false);
uiBase = uiGO.GetComponent <UIBase>();
}
uiBase.UIName = uiName;
uiBase.OrderLayer = layer;
// 替换形式会关闭上个界面
if (openType == OpenType.Replace)
{
CloseTopUI();
}
// 检测必要组件是否存在并处理层级
CheckComponentAndSortOrder(layer, uiBase);
// 添加到字典
if (!_uiDic.ContainsKey(uiName))
{
_uiDic.Add(uiName, uiBase);
}
// CheckCurrentUIDIC();
return(uiBase as T);
}
// 检测必要组件是否存在并处理层级
private void CheckComponentAndSortOrder(SortOrderLayer layer, UIBase uiBase)
{
Canvas canvas = uiBase.gameObject.GetComponent <Canvas>();
if (canvas == null)
{
canvas = uiBase.gameObject.AddComponent <Canvas>();
}
canvas.overrideSorting = true;
canvas.sortingOrder = GetMaxSortOrder(layer, uiBase.UIName);
uiBase.UICanvas = canvas;
uiBase.SortOrder = canvas.sortingOrder;
GraphicRaycaster raycast = uiBase.gameObject.GetComponent <GraphicRaycaster>();
if (raycast == null)
{
raycast = uiBase.gameObject.AddComponent <GraphicRaycaster>();
}
uiBase.Raycast = raycast;
}